>>76495081 (OP)
Lift heavy ass weights just like Mike. Mike had great forearm genes and built his forearms mostly from handling heavy barbells without straps. Dorian Yates was also a similarly gifted in forearms and got them the same way. If you have the genes for it, you won't have to train them directly. Roids help with that too.
If you don't have the genes for it regularly perform the following on an arm or back day:
>hammer curls
>wrist curls
>gripping--preferably with a hammer strength style grip machine though a barbell can be substituted for this purpose
These should get you the most if not all of the forearm size possible for you. Just a few sets of each at the end of the designated workouts.
Ignore memes like rice buckets. It's a cool warmup. But not a good exercise.
>>76495212
He wasn't on meth persay. He was on amphetamines like Adderall prescribed by a doctor. Mike started them to further his writing career because he was a workaholic and wanted to feel conscious all the time so he could work on his magazine. It had nothing to do with body building. Also the gay for pay thing was a myth made up by a faggot who wanted to be an internet personality.